Apparatus for internally striping can body side seams



July 2, 1940. c. J. AULBACH APPARATUS FOR INTERNALLY STRIPING CAN BODYSIDE SEAMS Filed July 5, 1938 4 Sheets-Shea?l 1 A, W M, Nb NN QN qw w wA v( v c l J hh @n E mw wh n M III NN @d Nh.. .d/ IIIJ N..Q\% NW r iv- En u iQ! /f #Il .rn 5.1M hmmm ....mz wila.--" -TP NW m6 Aw ww; 1, un www,,l .L mw ww 1 .MHMMHMMFIHNLJ 1||||||r uw. .H LUMJQHIHIF EN -Il n D ma. oQn Nh" wh@ mw s. MG m m ilu 1, 11 I wm am um wm b R ww bwmwmvQv/rvw/Whm. .QW WW WY July 2, 1940. c. J. AULBACH APPARATUS FORINTERNALLY STRIPING CAN BODY SIDE SEAMS 4 Sheets-Sheet 5 Filed July 5,1938 @ttm/"MIM July 2, 1940. c. J. AULBACH 2,206,801

APPARATUS FOR INTERNALLY STRIPING CAN BODY SIDE SEAMS Filed July 5, 19384 Sheets-Sheet 4 u, y u M m ,s ww k, .im m a Y m W O O O O o O o. Wl \o\I! wm. m.,

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`Patented July 2, 1940 APPARATUS FOR' INTERNALLY'STBIPIN CAN BODY SIDESEAMS Clarles J. Aulbach, Syracuse, N. Y., assignorl'to Continental CanCompany Inc., New York, N. Y., a corporation o! New York ApplicationJuly 5, 1938, Serial No. 217,556

10 Claims. The invention relates generally to apparatus for forming`cany bodies and primarily seeks to provide novel means for applying astripe of enamel or lacquer over the side seams of the can bodiesinternally thereof. i l

In order `to protect products packaged in completed containers fromdirect contact with the metal of which the containers ,are formedl it iscustomary to provide the containerswlth interior protective coatings.'lhis coating usually is applied to ,the blanks from which the canbodies are formed. In the formationof the can bodies the blanksarefedkalong in a body maker, are formed about and side seamed on a forminghorn, and then, while 4the can bodies are being fed along on thev horn,the side seams are suitably solder bonded.` The protective vcoating isomitted from the portions of the blanks which are joined in theformation of the side seams so that eicient solder bonding can beeffected, and

it is the purposeot-the present invention to pro-- vide novelmeansgiorapplying the desired protective coating to thesestripes ofmetal surface left barein the region `of the side seams internally ofthe can bodies.

An object of the invention is to provide means for moving the can bodiesalongin spaced relation, means for `engaging the side seams internallyof the can bodies as they are moved along, and means for applyingprotective coating material to the side seam engaging means.

Another object of the inventionis to provide apparatus 'of the characterstated in whichthe side seam engaging means comprises a brush.

Another object of the invention is to provide apparatus of the characterstated in which the protective coating material is applied to the sideseam engaging means through the spaces intervening the moving canbodies.

Another object of the invention is to provide apparatus of thecharacterdescribed in which the protective coating material is appliedto the side seam engaging means through the spaces intervening themovlngcan bodies without contacting the can bodies externally. i Y Anotherobject of the invention is to provide apparatus ofv the characterdescribed in which the protective coating material is applied to theside seam engaging means by an applicator portion which is movedsynchronously with the can bodies and enective only at the spacesintervening can bodies. r l l Another object of the invention is toprovide apparatus of the character described in which the applicatorcomprises a rotor having a helical (Cl. ill-40) rib and which rotates ina bath of protective coating material.

Another object of the invention is to provide a novel combination oftheprotective coating applying devices` andmeans for supporting them andthe moving can bodies.

vWith the above and other objects in view which will hereinafter appear,the nature ofthe invention will be more `clearly understood by followingthe detailed description, the appended claims, and the several viewsillustrated in the accom- Danville drawings.

In the drawings, y

Figure l is a side elevation illustrating the invention.`

Figure 2 is a plan view, parts being broken away. y

Figure 3 is an enlarged detail sideview of the taipplicator, parts beingbroken away and in sec- Figure 4 isa vertical cross section taken on theline 4-4 on Figure 3.

Figure 5 is a view similar to Figure 3 and illustrating the delivery endof the horn.

'Figure 6 is a vertical cross section taken on the line `B-Bon Figure 5.

.Figure 7 is a view similar to Figure 3 and illustrating the receivingend oi the horn.

Figure 8 is a vertical cross section taken on the line I--B on Figure'7.

Figures 9 andlO are detail views, respectively illustrating the abutmentbar in plan and side elevation.

Figure 1l is a sectional perspective view illustrating a fragment of acan body with the protective stripe applied thereon.

The improved apparatus for striping can body side seams internally ofthe can bodies preferably `is mounted for direct cooperationv with abody maker whereby the can bodies are received from the body maker Justafter the seams thereof have been solder bonded. It is to be understood,however, that the apparatus is adaptable to use in any place where canbodies arebeing moved along under such control that the side seamsthereof move in longitudinal alinement.

In the drawings, ln which like numerals of reference indicate like partsin all of the figures, 5 designates a supporting arm at one end of whichis supported a longitudinal housing 6, the latter 50 the pedestalssupport a pair of laterally spaced I6 longitudinal supports or guides 9for the can bodies, the supports being shaped to conform to y thecurvature of the can bodies. See 4, and 6.

Adjacent each pedestal 8 is mounted a support Figures 1,

pin bearing block Ill, and in each block there is.

the body `maker is indicated at 40 and includes provided a plurality ofvertical bearings III for a group of horn supporting pins I2. `'Ihe pinsare vertically reciprocable in the bearings and project above and belowthe blocks as indicated in` Figures 5 and 6 of the drawings. Each pincarries an adjustably mounted, tapered supporting head I3 engageable ina receiving socket I4.

formed in the lower portion of a -horn I5.

It will be observed by reference to Figure 1l of the drawings that agroup of the pins is disposed beneath each end' of the horn, and thesepins constitute the sole supporting means forthe horn and are movable,in a manner later to be described, for allowing can bodies to pass overand along the horn without being contactedby the supporting pins.

At its lower end each pin islink-connected as at I6 to an arm I1 pivotedat I3v on a mounting shaft and equipped with a roller I9 disposed forengagement with a cam 2 0 rotatable with a cam shaft 2 I .and includinga lift portion V22. See Figures 1, 5 and 6 of the drawings. The vcamshaft 2| is rotated in timed relation'with thev movement of the cambodies along the horn, and the cams 26 are so positioned on the shaft 2lthat the supporting pins are successively projected in to and retractedfrom the receiving sockets Ilin the horn so as to be engageable with thehorn only in the spaces intervening moving can bodies, as shown inFigures 1 and 5 of the'drawings. wardly by anchored spring equipments 23so that the rollers I9 are constantly held in engagement with the cams20.

'Ihe horn I5 is provided with a longitudinal groove 24 along its uppersurface, as shown in Figures l, 3, 5 and 6, to receive the dogs 25 whichdepend from the conveyor chain 26 and serve to ymove the can bodiesalong and over the horn in the chain 26 passes over a driven sprocket 39mounted on a shaft 3I supported on a-bracket 32 to which the abutment bar is secured as` at 33 and which is inturn supported as at vv34 on astationarily supported bracket 35. See Figures The bar 29, shownindetail in Figures 9 and l0, is grooved as at 36 to form a guideway forthe lower flight of the chain 26, the lower portion of the groovewaybeing partially closed by supporting plates 31. Thus the lower flightofthe chain is copned against moving upwardly or downwardly and the canbody driving dogs 25, projecting into the longitudinal grooveway 24 iin,

the horn, cooperate with the pin sockets "M in supporting the hornagainst lateral displacement both at the upper and lower portionsthereof. It

will also be observed that theA abutmentfbar 29' and the plates 31thereof are disposed immediate- 1y above the horn soas to actas abutmentmeans extending substantially the full length ofI the horn and securingit against displacement byv any i upward thrust imparted thereto. Agrooved guideway 36 is supported as at 39 above the bar 'I'he arms I1are constantly urged down- 29 and suitably the upper flight of the chain26, as shownin Figures 1, ?,l 5, 6 and'8 of the drawings.

m this particular mustrauon', the apparatus is'disclosed as mounted' atthe end of a body maker. .Theusual canbody feeding machine of theusualfeed dogs 4I. yThis chain lpasses over a driven sprocket 42. andthe cans moved alongin longitudinally spaced relation by the'chain 40lare stripped oil. by feed dogs-'43 carried'b'y av transfer chain`fwhich is moved more rapidly than the chain 40 and passes over an idlersup- Thus movement of the chain 40 is imparted to the conveyor chain 26.It will be observed by reference to Figures 2 and 8 of the drawings thatthe transfer chain 44 is' disposed slightly to one side of the centerline of the apparatus, and the can bodydriving dogs 43 thereon engagethecan body edges as shown in Figure 8 of the drawings,

It "will be observed by reference to Figures'l and 3 ofthe drawings,that the horn I5 isrecessed at the lower central portion 'thereof as.atv

56 and is equipped with mounting ribs 5I to which brackets 52 arevremovably secured as at 53,` said bracketsserving as supports for abrush 54. T he brush is thus mounted to extend longitudinally of thehorn and in position for engaging the side seams of the can bodiesinternally the'reof as shown in Figures 3 and 4 of the drawings.

Beneath the brush, in'a recess 55 provided in the housing 6, a reservoir5 6-is removably mounted as at 51-and contains a'bath 58 of protectivecoating material which is to be applied inthe form of a longitudinalstripe in fthe region ofthe side seamsinternally of the can bodies.Arotor 59 is longitudinally disposed androtatably mounted in thereservoir and includes a peripherally extended helicalrib 60which dipsin to'the coating material and functions as a coating materialapplicator. The rotor includes a shaft portion which 'is extended beyondone end of the reservoir and-has rotation imparted thereto" by a chainand sprocket equipment 6I fromfany suitable moving part ofthe body maker(not shown) l so that the rotor will be driven in suitably timedrelation with the moving can bodies.

The cam shaft v2I.- `is similarly `driven by sprocket andchainvconnections 62 so thatthe lsupporting pins I2 will be operated insuitably timed relation with themoving canbodies as hereinbeforedescribed.

In'Figure 11 ofthe drawings, I have illustrated a fragment ofa'can body.'The can bodies are designatedC and have the inner surfaces thereofprovided with a protective coatingindicated at e and which terminates asat t so as to provide f a` bare strip of metal. in-the region in whichthe hooksh intereng'ageto form theside seams. 'I'he metal is leftbare'in this region so as to avoid frustrationof elcient solder bonding.After the canV bodies have been completed by the solder bondingoperationthe stripes of protecting coating is appliedoverthe previously baremetal'portions by the apparatusherein described.

As the can bodies C are moved along the horn in equidistantly spacedrelation, as shown in Figures 1 and 3 of the drawings, the helical rib80 .will carry protective coating material from the of structure andarrangement oi parts may be variously changed and modiiied withoutdeparting from the spirit and scope of my invention. I claim: l: kInapparatus of the character described. means for moving side seamed canbodies in longitudinally spaced relation, means i'orengaging the sideseams internally of the can bodies as they are moved along, andmeans'including an applicator rotatable about an axis disposed generallyparallel the line along which the can bodies are fed Vfor applyingprotective coating material to the side seam engaging means through thespaces intervening thermoving can bodies. Y

2, Injapparatus of the character described, means for moving side seamedcan bodies in longitudinally spaced relation, means for engaging theside seams internally. of'the can bodies as they are moved along, andmovable means engageable only with said side seam engaging means throughspaces intervening the Vmoving' can bodies for applying protectivecoating material to the side seam engaging means without contacting thecan bodies externally.

3. In apparatus oi the character described, means for moving side seamedcan bodies in longitudinally spaced relation, means for engaging theside seams internally oi the can bodies as they are moved along, andmeans movable synchronously with the can bodies to progressively contactsaid side seam engaging'means only at spaces intervening moving canbodies for applying protective coating material to the side seamengaging means.

4. In apparatus of the character described. a brush engageable with theside seams' internally of the can bodies as they are moved along, aprotective coating material bath, and an helical applicator rib dippingin said bath and engageable progressively with that portion of the brushwhich is exposed in the space intervening a pair of moving can bodies.

5. In apparatus of the character described, a brush longitudinallydisposed and stationarlly supported for contacting the side seamsinternally of the can bodies as they are moved along, a reservoircontaining a bath of protective coating material, a rotor disposedlongitudinally in the reservoir and rotatable about an axis parallelingthe line of travel oi the can bodies and having an helical applicatorrib projecting therefrom and serving to pick up material from the bathand apply it to the brush, said rotor being rotatable in'timed relationwith the can body travel whereby the rib will progressively engage thebrush always in a space intervening two moving can bodies.

6. In apparatus of the character described, a

. horn, means for mdving side seamed can bodies over and along the hornin spaced relation, a

, hom for contact with the nde seannmtemally o! the moving can bodies. areservoir supported beneath the horn and containinga bath of protectivecoating materiaLa rotor -having an. helical rib land rotated in timedrelation with the moving canbodies so that the rib dips into the bathand picks up coating material and applies it to the brush in the spacesintervening Amoving can `bodies, and movable means engageable ,with thehorn at spaced points endwise ot they reservoir for supporting44 it`lwithout interfering `with can bodies moving thereover. p. l

7. In apparatusv ot the character described, a horn, means kfor movingside seamed can bodies over and along the horn in lspaced relation, a

brush supported intermediate the ends of the horn for lcontact with theside seams internally of the moving can bodies, a reservoir .supportedbeneath the horn and containing a bath of protective coating material, arotor having an helical rib and rotated in timed relation with themoving can bodies so that therib dips into the bath and picks up coatingmaterial'and lapplies it to the brush in the spaces intervening movingcan bodies, movable means engageable with the'horn at spaced pointsendwise of the reservoir for supporting.v it without interfering withcan bodies moving thereover, and means eiiectlve above and below thehorn for preventing lateral displacement thereof.

8. In apparatus ot the character described, a horn. meansfor moving sideseamed can bodies over and along the horn in spaced relation, a brushsupported intermediate the ends. of the horn for contact with the sideseams internally of the moving can 'bodiessa reservoir supported beneaththe horn and containing a bath of protective coating material, a rotorhaving an helical rib and rotated in timed relation with the moving canbodies so that the rib dips into the bath and picks up coating materialand applies it to the brush in the spaces intervening moving can bodies,and movable means engageable with the horn at spaced points endwise ofthe reservoir for supporting it without interfering with can bodiesmoving thereover, said can body moving means including a chain disposedcentrally over the horn and having depending dogs engageable with thecan bodies, and said horn having a. longitudinal grooveway therein forreceiving said lugs whereby said lugs serve also to prevent lateraldisplacement of the horn.

9. In apparatus of the character described, a horn, means for movingside seamed can bodies over and along the horn in spaced'relaton, abrush supported intermediate the ends of the horn for contact with theside seams internally of the4 moving can bodies, a reservoir supportedbeneath the horn and containing a bath of protective coating material, arotor having an helical rib and rotated in timed relationwith the movingcan bodies so that the rib dips into the bath and picks up coatingmaterial and applies it to the brush in the spaces intervening movingcan bodies, movable means engageable with the horn at spaced pointsendwise of the reservoir for supporting it without interfering with canbodies moving thereover, said can body moving means including a chaindisposed centrally over the horn and having depending dogs engageablewith the can bodies, said horn having a longitudinal grooveway thereinfor receiving said lugs whereby said lugs serve alsoto prevent lateraldisplacement of the horn, and means for preventing upward or downwardmovement of the portion of 75 the chain adjacent the horn and forpreventing upward movement of the horn.

10. In apparatus of the character described, a horn, means for movingside seamed can bodies over and along the horn in spaced relation, Aabrush supported intermediate the ends of the horn for contact with theside seams internally of the moving can bodies, a reservoir supportedbeneath the horn and containing a bath of protective coating material, arotor having an helical rib and rotated in timed relation with themoving can bodies so that the rib dips into the bath and picks upcoating material and applies it to the brush in the spaces interveningmoving can bodies, movable means engageable with the horn at spacedpoints endwise of the reservoir for supporting it without interferingwith can bodies moving thereoven said can body moving means including achain disposed centrally over the horn and having depending dogsengageable with the can bodies, said horn having a longitudinalgrooveway .therein for receiving said lugs whereby said lugs serve alsoto prevent lateral displacement of the horn, and means for preventingupward or downward movement of the portion of the chain adjacent thehorn and for preventing upward movement of the horn, said last namedmeans including an abutment bar having a grooveway therein for receivingsaid chain portion and being of a length for extending oversubstantially all of said horn.

CHARLES J. AULBACH.

